<citerefentry><refentrytitle>free</refentrytitle><manvolnum>3</manvolnum></citerefentry>
call after use.</para>
- <para>If the <literal>pid</literal> parameter of any
+ <para>If the <varname>pid</varname> parameter of any
of these functions is passed as 0 the operation is
executed for the calling process.</para>
</refsect1>
<function>sd_pid_get_machine_name()</function>
interfaces are available as shared library, which can
be compiled and linked to with the
- <literal>libsystemd-login</literal>
- <citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
+ <constant>libsystemd-login</constant> <citerefentry><refentrytitle>pkg-config</refentrytitle><manvolnum>1</manvolnum></citerefentry>
file.</para>
<para>Note that the login session identifier as